After Voldemort takes over the Ministry of Magic, Harry, Percy, Ron, and Hermione are forced into hiding. They try to decipher the clues left to them by Dumbledore to find and destroy Voldemort's Horcruxes. Meanwhile, the students and teachers unite to defend Hogwarts against Lord Voldemort and the Death Eaters.

Dumbledore and Harry Potter learn more about Voldemort's past and his rise to power. Meanwhile, Harry stumbles upon an old potions textbook belonging to a person calling himself the Half-Blood Prince.

Harry Potter and Dumbledore's warning about the return of Lord Voldemort is not heeded by the wizard authorities who, in turn, look to undermine Dumbledore's authority at Hogwarts and discredit Harry.

When Harry is chosen as participants of the inter-school Triwizard Tournament, they are pulled into a dark conspiracy that endangers Harry's life.

Sally Jackson, an accomplished writer and Healer at St. Mungo's and clear-sighted mortal gave birth to a beautiful boy with Jet black hair and sea-green eyes. Although not only was she from a respectable pureblood lineage but also one of the last descendants of Godric Gryffindor himself. Watch Percy grow and witness his adventures. (Here, Percy's a bit like James Potter)

The sequel to book 1. Percy is now in his second year and the chamber of secrets has been open and students and creatures at the school begin to get petrified, Harry and Percy find himself surrounded in mystery.

Percy Jackson is now in his third year. He returns to Hogwarts just as Harry, Ron and Hermione learn about Sirius Black and his plans to kill Harry. However, when Harry runs into him, he learns that the truth is far from reality.